./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8176e7e5e6b2069fd1594d8f16b741459bb13cc9 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8176e7e5e6b2069fd1594d8f16b741459bb13cc9 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:48:25,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:48:25,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:48:26,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:48:26,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:48:26,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:48:26,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:48:26,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:48:26,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:48:26,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:48:26,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:48:26,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:48:26,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:48:26,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:48:26,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:48:26,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:48:26,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:48:26,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:48:26,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:48:26,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:48:26,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:48:26,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:48:26,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:48:26,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:48:26,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:48:26,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:48:26,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:48:26,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:48:26,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:48:26,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:48:26,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:48:26,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:48:26,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:48:26,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:48:26,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:48:26,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:48:26,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:48:26,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:48:26,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:48:26,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:48:26,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:48:26,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:48:26,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:48:26,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:48:26,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:48:26,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:48:26,076 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:48:26,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:48:26,076 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:48:26,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:48:26,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:48:26,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:48:26,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:48:26,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:48:26,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:48:26,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:48:26,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:48:26,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:48:26,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:48:26,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:48:26,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:48:26,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:48:26,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:48:26,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:48:26,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:48:26,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:48:26,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:48:26,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:48:26,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:48:26,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:48:26,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:48:26,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8176e7e5e6b2069fd1594d8f16b741459bb13cc9 [2019-11-28 16:48:26,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:48:26,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:48:26,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:48:26,438 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:48:26,439 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:48:26,440 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2019-11-28 16:48:26,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33eeba2af/0ef10666ecfe4d29bf5f0674c02af1a0/FLAG4d747f0a9 [2019-11-28 16:48:27,026 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:48:27,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2019-11-28 16:48:27,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33eeba2af/0ef10666ecfe4d29bf5f0674c02af1a0/FLAG4d747f0a9 [2019-11-28 16:48:27,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33eeba2af/0ef10666ecfe4d29bf5f0674c02af1a0 [2019-11-28 16:48:27,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:48:27,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:48:27,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:48:27,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:48:27,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:48:27,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2974a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27, skipping insertion in model container [2019-11-28 16:48:27,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:48:27,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:48:27,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:48:27,707 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:48:27,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:48:27,848 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:48:27,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27 WrapperNode [2019-11-28 16:48:27,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:48:27,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:48:27,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:48:27,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:48:27,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:48:27,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:48:27,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:48:27,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:48:27,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... [2019-11-28 16:48:27,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:48:27,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:48:27,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:48:27,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:48:27,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:48:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:48:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:48:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:48:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:48:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:48:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:48:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:48:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:48:28,486 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:48:28,486 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:48:28,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:28 BoogieIcfgContainer [2019-11-28 16:48:28,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:48:28,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:48:28,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:48:28,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:48:28,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:48:27" (1/3) ... [2019-11-28 16:48:28,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7051af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:48:28, skipping insertion in model container [2019-11-28 16:48:28,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:27" (2/3) ... [2019-11-28 16:48:28,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7051af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:48:28, skipping insertion in model container [2019-11-28 16:48:28,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:28" (3/3) ... [2019-11-28 16:48:28,498 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2019-11-28 16:48:28,513 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:48:28,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:48:28,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:48:28,563 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:48:28,563 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:48:28,563 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:48:28,563 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:48:28,564 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:48:28,564 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:48:28,564 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:48:28,564 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:48:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:48:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:48:28,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:48:28,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:48:28,588 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:48:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:48:28,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2019-11-28 16:48:28,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:48:28,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72692036] [2019-11-28 16:48:28,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:48:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:48:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:48:28,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72692036] [2019-11-28 16:48:28,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:48:28,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:48:28,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012798162] [2019-11-28 16:48:28,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:48:28,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:48:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:48:28,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:48:28,763 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:48:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:48:28,787 INFO L93 Difference]: Finished difference Result 62 states and 100 transitions. [2019-11-28 16:48:28,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:48:28,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-28 16:48:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:48:28,803 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:48:28,803 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:48:28,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:48:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:48:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:48:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:48:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2019-11-28 16:48:28,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2019-11-28 16:48:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:48:28,858 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2019-11-28 16:48:28,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:48:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2019-11-28 16:48:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:48:28,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:48:28,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:48:28,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:48:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:48:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2019-11-28 16:48:28,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:48:28,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017862402] [2019-11-28 16:48:28,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:48:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:48:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:48:29,156 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:48:29,156 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:48:29,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:48:29 BoogieIcfgContainer [2019-11-28 16:48:29,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:48:29,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:48:29,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:48:29,232 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:48:29,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:28" (3/4) ... [2019-11-28 16:48:29,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:48:29,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:48:29,243 INFO L168 Benchmark]: Toolchain (without parser) took 1857.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -96.4 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:48:29,244 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:48:29,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:48:29,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:48:29,248 INFO L168 Benchmark]: Boogie Preprocessor took 39.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:48:29,250 INFO L168 Benchmark]: RCFGBuilder took 548.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:48:29,252 INFO L168 Benchmark]: TraceAbstraction took 741.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:48:29,253 INFO L168 Benchmark]: Witness Printer took 8.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:48:29,269 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 464.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 548.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 741.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Witness Printer took 8.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of someUnaryDOUBLEoperation at line 132, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L132] double x = -0.0; [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L58] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L133] double res = __ieee754_log(x); [L19] __int32_t hx, lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L136] COND TRUE !isinf_double(res) [L137] __VERIFIER_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:48:31,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:48:31,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:48:31,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:48:31,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:48:31,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:48:31,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:48:31,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:48:31,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:48:31,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:48:31,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:48:31,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:48:31,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:48:31,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:48:31,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:48:31,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:48:31,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:48:31,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:48:31,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:48:31,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:48:31,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:48:31,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:48:31,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:48:31,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:48:31,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:48:31,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:48:31,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:48:31,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:48:31,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:48:31,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:48:31,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:48:31,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:48:31,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:48:31,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:48:31,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:48:31,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:48:31,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:48:31,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:48:31,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:48:31,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:48:31,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:48:31,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:48:31,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:48:31,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:48:31,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:48:31,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:48:31,456 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:48:31,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:48:31,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:48:31,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:48:31,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:48:31,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:48:31,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:48:31,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:48:31,459 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:48:31,460 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:48:31,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:48:31,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:48:31,461 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:48:31,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:48:31,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:48:31,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:48:31,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:48:31,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:48:31,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:48:31,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:48:31,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:48:31,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:48:31,464 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:48:31,464 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:48:31,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:48:31,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:48:31,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:48:31,465 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8176e7e5e6b2069fd1594d8f16b741459bb13cc9 [2019-11-28 16:48:31,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:48:31,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:48:31,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:48:31,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:48:31,803 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:48:31,804 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2019-11-28 16:48:31,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bfc827b/8f98d306293c4c5f852aa442aec8a6a2/FLAG5e3a472da [2019-11-28 16:48:32,380 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:48:32,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910b.c [2019-11-28 16:48:32,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bfc827b/8f98d306293c4c5f852aa442aec8a6a2/FLAG5e3a472da [2019-11-28 16:48:32,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bfc827b/8f98d306293c4c5f852aa442aec8a6a2 [2019-11-28 16:48:32,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:48:32,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:48:32,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:48:32,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:48:32,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:48:32,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:32" (1/1) ... [2019-11-28 16:48:32,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a5099d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:32, skipping insertion in model container [2019-11-28 16:48:32,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:48:32" (1/1) ... [2019-11-28 16:48:32,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:48:32,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:48:32,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:48:33,007 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:48:33,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:48:33,179 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:48:33,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33 WrapperNode [2019-11-28 16:48:33,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:48:33,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:48:33,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:48:33,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:48:33,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:48:33,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:48:33,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:48:33,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:48:33,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... [2019-11-28 16:48:33,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:48:33,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:48:33,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:48:33,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:48:33,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:48:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:48:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:48:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:48:33,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:48:33,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:48:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:48:33,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:48:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:48:58,259 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:48:58,259 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:48:58,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:58 BoogieIcfgContainer [2019-11-28 16:48:58,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:48:58,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:48:58,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:48:58,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:48:58,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:48:32" (1/3) ... [2019-11-28 16:48:58,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dc8bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:48:58, skipping insertion in model container [2019-11-28 16:48:58,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:48:33" (2/3) ... [2019-11-28 16:48:58,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dc8bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:48:58, skipping insertion in model container [2019-11-28 16:48:58,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:58" (3/3) ... [2019-11-28 16:48:58,271 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2019-11-28 16:48:58,282 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:48:58,290 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:48:58,303 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:48:58,329 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:48:58,329 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:48:58,329 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:48:58,330 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:48:58,330 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:48:58,330 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:48:58,331 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:48:58,331 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:48:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:48:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:48:58,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:48:58,354 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:48:58,354 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:48:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:48:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2019-11-28 16:48:58,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:48:58,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130393594] [2019-11-28 16:48:58,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:48:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:48:59,342 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:48:59,347 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:48:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:48:59,360 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:48:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:48:59,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130393594] [2019-11-28 16:48:59,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:48:59,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:48:59,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917532952] [2019-11-28 16:48:59,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:48:59,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:48:59,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:48:59,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:48:59,394 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:48:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:48:59,423 INFO L93 Difference]: Finished difference Result 62 states and 100 transitions. [2019-11-28 16:48:59,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:48:59,424 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-28 16:48:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:48:59,440 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:48:59,442 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:48:59,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:48:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:48:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:48:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:48:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2019-11-28 16:48:59,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2019-11-28 16:48:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:48:59,491 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2019-11-28 16:48:59,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:48:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2019-11-28 16:48:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:48:59,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:48:59,492 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:48:59,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:48:59,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:48:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:48:59,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2019-11-28 16:48:59,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:48:59,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277047081] [2019-11-28 16:48:59,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 16:49:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:02,225 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:49:02,225 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:02,427 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:49:02,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:02 BoogieIcfgContainer [2019-11-28 16:49:02,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:02,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:02,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:02,506 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:02,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:48:58" (3/4) ... [2019-11-28 16:49:02,512 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:49:02,602 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:49:02,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:02,605 INFO L168 Benchmark]: Toolchain (without parser) took 29878.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -84.9 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:02,606 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:02,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:02,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:02,608 INFO L168 Benchmark]: Boogie Preprocessor took 49.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:02,609 INFO L168 Benchmark]: RCFGBuilder took 24966.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:02,610 INFO L168 Benchmark]: TraceAbstraction took 4243.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:02,610 INFO L168 Benchmark]: Witness Printer took 96.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:02,614 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 453.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 24966.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4243.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. * Witness Printer took 96.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 137]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L132] double x = -0.0; [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L58] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L133] double res = __ieee754_log(x); [L19] __int32_t hx, lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L136] COND TRUE !isinf_double(res) [L137] __VERIFIER_error() VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...